Warning: Undefined array key “default_lang”

  • After I activated Polylang plugin and went through the initial configuration.
    I get a warning for all my pages under the Admin panel.
    And this warning also appears on the Home Page ??

    This is the warning:

    Warning: Undefined array key “default_lang” in /home/u792876904/domains/irit-oz.com/public_html/stg/wp-content/plugins/polylang/include/links-directory.php on line 63

    My website language is Hebrew and I’m adding English.
    My PHP version is 8.1
    Can you please advice how to resolve it?

    The page I need help with: [log in to see the link]

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